Python math.cosh()用法及代码示例

数学模块包含许多用于数学运算的函数。 math.cosh()函数返回数字的双曲余弦值。

用法： math.cosh(x)

以下示例说明了上述函数的用法：

范例1：

# Python code to implement 
# the cosh()function 
        
# importing "math" 
# for mathematical operations   
import math   
       
a = math.pi / 6
        
# Return the hyperbolic cosine value of numbers  
print (math.cosh(7)) 
print (math.cosh(56)) 
print (math.cosh(2.45)) 
print (math.cosh(1))

输出：

548.3170351552121
1.045829748006498e+24
5.8373201528613805
1.5430806348152437

范例2：

# Python code implementation of  
# the cosh() function 
import math  
import numpy as np  
import matplotlib.pyplot as plt   
     
in_array = np.linspace(1, np.pi**2, 30)  
     
out_array = []  
     
for i in range(len(in_array)):  
    out_array.append(math.cosh(in_array[i]))  
    i += 1
      
print("Input_Array:\n", in_array)   
print("\nOutput_Array:\n", out_array)   
   
   
plt.plot(in_array, out_array, "go-")   
plt.title("math.cosh()")   
plt.xlabel("X")   
plt.ylabel("Y")   
plt.show() 

输出：

Input_Array:
 [1.         1.30584843 1.61169686 1.91754528 2.22339371 2.52924214
 2.83509057 3.14093899 3.44678742 3.75263585 4.05848428 4.3643327
 4.67018113 4.97602956 5.28187799 5.58772641 5.89357484 6.19942327
 6.5052717  6.81112012 7.11696855 7.42281698 7.72866541 8.03451384
 8.34036226 8.64621069 8.95205912 9.25790755 9.56375597 9.8696044 ]

Output_Array:
 [1.5430806348152437, 1.9808808604882286, 2.6054281010353004, 3.475601381008832, 
4.673436054326172, 6.311857665383541, 8.545327974639738, 11.584406799892538, 
15.715602486950852, 21.328382407531667, 28.951889891868053, 39.30482907505833, 
53.36322053774325, 72.45241538606689, 98.37204237377239, 133.56566742304807, 
181.35116015020702, 246.23348513897733, 334.32940627527836, 453.94414303138643, 
616.3543428169035, 836.8711839061114, 1136.2838326866956, 1542.8193367770289, 
2094.8037224129744, 2844.275170350752, 3861.889901480525, 5243.583273208655, 
7119.614059693799, 9666.84456304416]